88999 has 4 divisors (see below), whose sum is σ = 90520. Its totient is φ = 87480.

The previous prime is 88997. The next prime is 89003. The reversal of 88999 is 99988.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88999 - 2¹ = 88997 is a prime.

It is a Duffinian number.

88999 is a modest number, since divided by 999 gives 88 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669 + ... + 790.

It is an arithmetic number, because the mean of its divisors is an integer number (22630).

2⁸⁸⁹⁹⁹ is an apocalyptic number.

88999 is a deficient number, since it is larger than the sum of its proper divisors (1521).

88999 is a wasteful number, since it uses less digits than its factorization.

88999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its digits is 46656, while the sum is 43.

The square root of 88999 is about 298.3270017950. The cubic root of 88999 is about 44.6472837363.

The spelling of 88999 in words is "eighty-eight thousand, nine hundred ninety-nine".